Cartridge fire-alarm.



A. A. CLIVE.

CARTRIDGE FIRE ALARM,

APPLICATION FILED APR. I4, 1914.

Patented July 4, 1916.

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.STATES PATENT oEEIcE.

ALBERT A. OLIVE', OF LOS CALIFORNIA, ASSIGNOR TO ,AMERICAN FIRE ALABI COIPANY, OF'LOS ANGELES, CALIFORNIA, A CORPORATION OF BALI-A roma., t -V Toall'ujhorntmay2 01tce1fli: 1

Be it known that I, ALBERT A. OLIVE, a

citizen of the United States,4residing at Los l Angeles, in the county of Los Angeles and State of California, have invented a new and useful Cartridge Fire-Alarm, of whichl ferred form of the invention set. Fig. 2 is a` longitudinal section of the form shown in Fig. 1 in the act of soundlng anv alarm. Fig. 3 is a view from the left of Fig. 2.

In the form shown in Figs. l, 2 and 3, a'

rigid member in the form of a bar 26 is pierced at one end with an orifice 27, for holding a cartridge. The opposite end 1s provided with a swivel screw 28 for suspending the device from. a wall or celling. A resilient member in the form of a spring 29 is coextending with said bar, and attached thereto by rivet 5, and at a distance from the point of attachment 5 and preferably at the opposite end thereof, is provided with a hammer 30 and lu 31 respectively on opposite sides of the ee end, the lug being spaced from the end of the spring. A resilient catch 32 extends between the end of the spring and lug and projects, when in the set position, over the end of the spring to engage with a rigid retainer shown as a link 33 which is pivoted -to the bar 26,and which, in the set plpsition, holds the spring 29 retracted. A sible element 34 is interposed between lug 31- and catch 32 to maintain restraining contact between the rigid elements 26, 33 and the resilient element 29 by causing the catch to engage with and catch link 33. When the device is set for use, the fusing-of element 34 will release catch 32 which in turn releases retainer 33 and spring 29, causing the hammer 30 to explode the cartridge.

' The form shown in Figs.v 1, 2, 3 is preferred for the vreason that the force of the spring is normally resisted by means of the catch, the fusible element 34 and the fusible Specification yof Letters Patent.

ppucaubn ma april 14, 1914. A serial no. 831,830.

y Gunmen Patented July 4, 1916.

element holdingmeans or lug 31; and the element 34 may be of comparatively large dimensions an is not subject tq any shearmgactlon which might otherwise cut .off the fusible element while yet in'a solidstate.

' It is noted that in the form shown, arigid retainer as 33 in Figs. 1, 2, 3, is pivotally connected with the bar marked by the character. 26 in Figs. 1, 2, and 3, and that said bar vin each of the figures is held by interposition of the fusible stop, said fusible stop being marked 34'in Figs. 1, 2, 3; the interposition of said stop being indirect in Fig. 1, throu h the medium of the catch 32, and that t e fusible member thus interpositioned maintains retaining contact between the free 4endsof the rigid and resilient members, and

that so long as the temperature remains sutliciently low the fusible means formed of said stop serves to hold the retainer 33 in position to hold the resilient and rigid members relatively retracted, and that said fusible element 1s effectual by its fusion to release the resilient element. One of the elements thus relatively restrained is pierced with cartridge retaining holes or seats as at 27 in Figs. 1 and 2.

It is to be noted that in the form shownA the rigid retainer as 33 is ultimately held by a fusible stop as 34 sov that whenever the stolp melts the retainer is freed.

claim:

1. The combination with a rigid element pierced to hold a cartridge of .a resilient element coextending with the rigid element and fixed to one end thereof, a hammer on the free end of the resilient element for exploding the cartridge, a retaining element interposed between the rigid and resilient elements to hold the resilient element retracted, the retaining element being pivotallyconnected to the rigid element, a lug on the end of the resilient member and spaced from the end thereof, a resilient catch extending between the lug and end of the resilient element and projecting in the set position to engage the retaining element, and a fusible element interposed between the lug and catch to hold the catch in i the set position.

2. A fire alarm comprising a rigid and a resilient element fastened together at one ber for exploding the cartridge, a retaining element inter osed between the free ends of the rigid an resilient elements to hold the resilient element retracted, a lug on the resiliient element and spaced from the end thereof, a resilient catch extending between the lug and the end of the resilient element and projecting to engage the retaining element, and a fusible element interposed between the -lug and resilient catch to hold the resilient catch in position to engage the retainn ing element and hold the resilient element retracted.

3. ln a fire alarm, the combination with a rigid bar and a coextending spring fixed to the bar at one end, the bar having an orifice for holding a cartridge, a hammer on said spring for exploding the cartridge, of a retaining link interposed between the spring and bar to hold the spring retracted, the link being pivoted to the bar, a lug on the spring and spa-ced from the end thereof, va resilient catch extending between the lug and spring and projecting to engage the link, and a fusible wedge interposed between the lug and catch to hold the catch in position to engage the link to hold the spring retracted.

4. ln a fire alarm, the combination with a rigid bar pierced to hold a cartridge, a spring Xed at one end to the bar and provided with a hammer for exploding the cartridge, a link to retain the hammer in retracted position, a resilient catch to en gage with said link, and a fusible element to hold the catch in engagement with the link, of a swivel suspension screw in the end of the rigid bar.

5. The combination with a bar having means to hold a cartridge, of a spring fixed to the bar and having means to explode the cartridge, means between the bar and springy to hold the spring retracted; yielding means to retain the retracting means in spring retracting position; a fusible element to hold the retaining means in retaining position; and. means to hold the fusible means in holding position.

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 28th day of March, 1914.

ALBERT A. CLIVE.

In presence of JAMES R. TowNsnNn, F. M. Kenner. 

